feat(transcription): add meeting assistant micro-service v0.1.0

- Added FastAPI backend with FFmpeg and Gemini 2.0 integration
- Added React frontend with upload and meeting list
- Integrated into main docker-compose stack and dashboard

transcription-tool/backend/app.py

@@ -0,0 +1,72 @@
+from fastapi import FastAPI, Depends, HTTPException, UploadFile, File, BackgroundTasks
+from fastapi.middleware.cors import CORSMiddleware
+from sqlalchemy.orm import Session
+import os
+import shutil
+import uuid
+from datetime import datetime
+
+from .config import settings
+from .database import init_db, get_db, Meeting, TranscriptChunk, AnalysisResult, SessionLocal
+from .services.orchestrator import process_meeting_task
+
+app = FastAPI(
+    title=settings.APP_NAME,
+    version=settings.VERSION,
+    root_path="/tr"
+)
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+@app.on_event("startup")
+def startup_event():
+    init_db()
+
+@app.get("/api/health")
+def health():
+    return {"status": "ok", "version": settings.VERSION}
+
+@app.get("/api/meetings")
+def list_meetings(db: Session = Depends(get_db)):
+    return db.query(Meeting).order_by(Meeting.created_at.desc()).all()
+
+@app.post("/api/upload")
+async def upload_audio(
+    background_tasks: BackgroundTasks,
+    file: UploadFile = File(...),
+    db: Session = Depends(get_db)
+):
+    # 1. Save File
+    file_id = str(uuid.uuid4())
+    ext = os.path.splitext(file.filename)[1]
+    filename = f"{file_id}{ext}"
+    file_path = os.path.join(settings.UPLOAD_DIR, filename)
+    
+    with open(file_path, "wb") as buffer:
+        shutil.copyfileobj(file.file, buffer)
+    
+    # 2. Create DB Entry
+    meeting = Meeting(
+        title=file.filename,
+        filename=filename,
+        file_path=file_path,
+        status="UPLOADED"
+    )
+    db.add(meeting)
+    db.commit()
+    db.refresh(meeting)
+    
+    # 3. Trigger Processing in Background
+    background_tasks.add_task(process_meeting_task, meeting.id, SessionLocal)
+    
+    return meeting
+
+if __name__ == "__main__":
+    import uvicorn
+    uvicorn.run("backend.app:app", host="0.0.0.0", port=8001, reload=True)